/** {@inheritDoc} */
@Override
public Object read(final InputStream is) {
final BoltzmannMachine result = new BoltzmannMachine();
final EncogReadHelper in = new EncogReadHelper(is);
EncogFileSection section;
while ((section = in.readNextSection()) != null) {
if (section.getSectionName().equals("BOLTZMANN")
&& section.getSubSectionName().equals("PARAMS")) {
final Map<String, String> params = section.parseParams();
result.getProperties().putAll(params);
}
if (section.getSectionName().equals("BOLTZMANN")
&& section.getSubSectionName().equals("NETWORK")) {
final Map<String, String> params = section.parseParams();
result.setWeights(
NumberList.fromList(CSVFormat.EG_FORMAT, params.get(PersistConst.WEIGHTS)));
result.setCurrentState(
NumberList.fromList(CSVFormat.EG_FORMAT, params.get(PersistConst.OUTPUT)));
result.setNeuronCount(EncogFileSection.parseInt(params, PersistConst.NEURON_COUNT));
result.setThreshold(
NumberList.fromList(CSVFormat.EG_FORMAT, params.get(PersistConst.THRESHOLDS)));
result.setAnnealCycles(EncogFileSection.parseInt(params, BoltzmannMachine.ANNEAL_CYCLES));
result.setRunCycles(EncogFileSection.parseInt(params, BoltzmannMachine.RUN_CYCLES));
result.setTemperature(EncogFileSection.parseDouble(params, PersistConst.TEMPERATURE));
}
}
return result;
}
/** {@inheritDoc} */
@Override
public ActivationFunction createActivationFunction(String fn) {
String name;
double[] params;
int index = fn.indexOf('[');
if (index != -1) {
name = fn.substring(0, index).toLowerCase();
int index2 = fn.indexOf(']');
if (index2 == -1) {
throw new EncogError("Unbounded [ while parsing activation function.");
}
String a = fn.substring(index + 1, index2);
params = NumberList.fromList(CSVFormat.EG_FORMAT, a);
} else {
name = fn.toLowerCase();
params = new double[0];
}
ActivationFunction af = allocateAF(name);
if (af == null) {
return null;
}
if (af.getParamNames().length != params.length) {
throw new EncogError(
name
+ " expected "
+ af.getParamNames().length
+ ", but "
+ params.length
+ " were provided.");
}
for (int i = 0; i < af.getParamNames().length; i++) {
af.setParam(i, params[i]);
}
return af;
}